FAA Administrator Randy Babbitt accepts the resignation of Hank Krakowski, head of the agency's Air Traffic Organization. Citing several recent incidents of air traffic controllers falling asleep at their posts, Babbitt said: 'This conduct must stop immediately. I am committed to maintaining the highest level of public confidence and that begins with strong leadership.'The nation's top manager of airplane traffic resigned after several incidents in which air traffic controllers fell asleep at their posts, the Federal Aviation Administration announced Thursday morning.